How to use the nernst equation calculator
Find cell potential under non-standard conditions. Enter standard potential e°, electrons transferred, reaction quotient q, temperature in the fields above; the cell potential is computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- E0 — Standard potential E° (V)
- n — Electrons transferred
- Q — Reaction quotient Q
- T — Temperature (K)
Worked example
With standard potential e° = 1.10 V, electrons transferred = 2, reaction quotient q = 10, temperature = 298.15 K, the calculator gives cell potential ≈ 1.07042 V.
Frequently asked questions
What is the formula for the nernst equation calculation?
Cell potential (V) = E0-RGAS × T / (n × FARADAY) × ln(Q). Here E0 is standard potential e° (V), n is electrons transferred, Q is reaction quotient q, T is temperature (K).
What inputs do I need for the nernst equation calculator?
You need standard potential e° in V, electrons transferred, reaction quotient q, temperature in K. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.